Dog and ScissorsNisekoi S3Pet Girl of SakurasouHigh Scholl DXD S4Baka and TestGekkan Shoujo Nozaki-kunMy Teen Romantic Comedy SNAFUEngaged to the UnidentifiedIrregular At Magic High SchoolIs It Wrong to Try to Pick Up Girls in a Dungeon?One Week FriendsAnohana
As I thought of them.

No Game No Life
Yamada-Kun
Dungeon girl (screw typing out the full name)
The actual ending of Soul Eater (sort of like another season?)
Monster Musume (Not even out yet but it deserves a second season)

Irregular at Magic High school
Mondaiji ga isekai kara kurundesuka?
When supernatural battle became a common place.
Hidan no Aria
Sakurasou no Pet na Kanojo
Steins;Gate
Black Bullet
Hayate No Gotoku Season 5
No Game No Life
My Teen Romantic Comedy SNAFU S3 (cant get enough 8man)
Strike The Blood
The Devil's A Part-timer
Railgun
Index (Light Novel has more to go and still continuing)
Noragami

Still miss Sakurasou, Mondaiji, and Supernatural......
The anime was great but apparently the Light Novel is didnt do well... D:
Index totally should have 3rd season cuz the Light Novel went to new Testament, and still is very very popular
And i want more Tatsuya with his magical dual barreta

Because that doesn't another season. What Berserk needs is a reboot. Completely different thing.

I guess I'll throw Mononoke and Giant Killing into the mix, two series that I personally really like. I got the Manga for Giant Killing so I am fine on that front, but it kind of saddens me that we'll never get more Mononoke. Then again, who knows, we also suddenly got another Mushishi Anime after eight years, so nothing is certain